1275678974 has 4 divisors (see below), whose sum is σ = 1913518464. Its totient is φ = 637839486.

The previous prime is 1275678973. The next prime is 1275678983. The reversal of 1275678974 is 4798765721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4798765721 = 23357 ⋅205453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275678973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318919742 + ... + 318919745.

It is an arithmetic number, because the mean of its divisors is an integer number (478379616).

Almost surely, 2^1275678974 is an apocalyptic number.

1275678974 is a deficient number, since it is larger than the sum of its proper divisors (637839490).

1275678974 is an equidigital number, since it uses as much as digits as its factorization.

1275678974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637839489.

The product of its digits is 5927040, while the sum is 56.

The square root of 1275678974 is about 35716.6484149899. The cubic root of 1275678974 is about 1084.5438911962.

The spelling of 1275678974 in words is "one billion, two hundred seventy-five million, six hundred seventy-eight thousand, nine hundred seventy-four".